Influence of rock mass fracturing on the net penetration rates of hard rock TBMs

被引：33

作者：

Macias, F. J. ^{[1
]}

Jakobsen, P. D. ^{[1
]}

Seo, Y. ^{[1
]}

Bruland, A. ^{[1
]}

机构：

[1] NTNU, Dept Civil & Transport Engn, Trondheim, Norway

来源：

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2014年 / 44卷

关键词：

Hard rock TBMs; Net penetration rate; Rock mass boreability; Rock mass fracturing factor (k(s)); NTNU prediction model; PERFORMANCE PREDICTION; FRAGMENTATION; MODEL;

D O I：

10.1016/j.tust.2014.07.009

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Penetration rates during excavation using hard rock tunnel boring machines (TBMs) are significantly influenced by the degree of fracturing of the rock mass. In the NTNU prediction model for hard rock TBM performance and costs, the rock mass fracturing factor (k(s)) is used to include the influence of rock mass fractures. The rock mass fracturing factor depends on the degree of fracturing, fracture type, fracture spacing, and the angle between fracture systems and the tunnel axis. In order to validate the relationship between the degree of fracturing and the net penetration rate of hard rock TBMs, field work has been carried out, consisting of geological back-mapping and analysis of performance data from a TBM tunnel. The rock mass influence on hard rock TBM performance prediction is taken into account in the NTNU model. Different correlations between net penetration rate and the fracturing factor (k(s)) have been identified for a variety of k(s) values. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：108 / 120

页数：13

共 22 条

[1]

Barton N.R., 2000, TBM tunnelling in jointed and faulted rockM

[2]

Bejari H., 2012, ROCK MECH ROCK ENG

[3]

Bieniawski Z.T., 2006, TUNN UNDERGR SP TECH, V21, P237

[4]

Bruland A., 1998, THESIS NTNU TRONDHEI, V1

[5] Classifications of properties influencing the drillability of rocks, based on the NTNU/SINTEF test method [J].

Dahl, Filip ;

Bruland, Amund ;

Jakobsen, Pal Drevland ;

Nilsen, Bjorn ;

Grov, Eivind .

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2012, 28 :150-158

[6] Analysis and prediction of TBM performance in blocky rock conditions at the Lotschberg Base Tunnel [J].

Delisio, A. ;

Zhao, J. ;

Einstein, H. H. .

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2013, 33 :131-142

[7] Study of various models for estimation of penetration rate of hard rock TBMs [J].

Farrokh, Ebrahim ;

Rostami, Jamal ;

Laughton, Chris .

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2012, 30 :110-123

[8] Numerical modelling of the effects of joint spacing on rock fragmentation by TBM cutters [J].

Gong, QM ;

Jiao, YY ;

Zhao, J .

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2006, 21 (01) :46-55

[9] Numerical modeling of the effects of joint orientation on rock fragmentation by TBM cutters [J].

Gong, QM ;

Zhao, J ;

Jiao, YY .

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2005, 20 (02) :183-191

[10] Developing new equations for TBM performance prediction in carbonate-argillaceous rocks: a case history of Nowsood water conveyance tunnel [J].

Hassanpour, J. ;

Rostami, J. ;

Khamehchiyan, M. ;

Bruland, A. .

GEOMECHANICS AND GEOENGINEERING-AN INTERNATIONAL JOURNAL, 2009, 4 (04) :287-297

← 1 2 3 →